Be2C
      Wyckoff R W G
      Crystal Structures 1 (1963) 239-444
      Second edition. Interscience Publishers, New York, New York
      Anti-fluorite structure
      _database_code_amcsd 0011732

      CELL PARAMETERS:    4.3300   4.3300   4.3300   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     81.183
      Density (g/cm3):      2.457
      MAX. ABS. INTENSITY / VOLUME**2:      4.726148153    
      RIR:      0.626
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                35.92         93.04        2.4999    1   1   1         8
                41.72          1.39        2.1650    2   0   0         6
                60.47        100.00        1.5309    2   2   0        12
                72.38         17.77        1.3055    3   1   1        24
                76.16          1.32        1.2500    2   2   2         8
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       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.